CN106641386B - Pressure compensation electricity ratio seat valve - Google Patents
Pressure compensation electricity ratio seat valve Download PDFInfo
- Publication number
- CN106641386B CN106641386B CN201611050910.6A CN201611050910A CN106641386B CN 106641386 B CN106641386 B CN 106641386B CN 201611050910 A CN201611050910 A CN 201611050910A CN 106641386 B CN106641386 B CN 106641386B
- Authority
- CN
- China
- Prior art keywords
- valve core
- poppet valve
- valve housing
- main valve
- poppet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000005611 electricity Effects 0.000 title claims abstract description 22
- 230000004907 flux Effects 0.000 claims abstract description 21
- 230000000712 assembly Effects 0.000 claims abstract description 11
- 238000000429 assembly Methods 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 26
- 239000003921 oil Substances 0.000 description 35
- 238000010586 diagram Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/026—Pressure compensating valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
Abstract
The invention discloses a kind of pressure compensation electricity ratio seat valves, it is made of proportion electro-magnet component and seat valve assemblies, the seat valve assemblies include main valve housing and the poppet valve core in main valve housing, the front of the flux sleeve is connect with main valve housing, the front end of the main valve housing is equipped with oil inlet, the side of the main valve housing is equipped with oil outlet, the front of the poppet valve core is equipped with the conical head cooperated with oil inlet, the rear portion of the poppet valve core protrudes into ante-chamber and is connected with reset spring, the rear portion of the poppet valve core is equipped with the radial pressure guide hole being connected to ante-chamber, the poppet valve core is provided in the axial direction with the axial pressure guide hole for being connected to poppet valve core front end with radial pressure guide hole.The configuration of the present invention is simple, compact-sized, pressure is high, and pollution resistance is strong, and control precision is high.
Description
Technical field
The present invention relates to valves, and in particular to pressure compensation electricity ratio seat valve.
Background technique
At present in Hydraulic Industry, electric proportional flow control valve is used usually in the speed of electrical modulation executing agency；Oil circuit is fast
Speed truncation pressure maintaining is realized with Solenoid seated valve.It is used cooperatively by electric proportional flow control valve with Solenoid seated valve series connection to realize execution machine
The pole that works at a slow speed fastly of structure stops keeping load.Therefore, structure is complicated, at high cost, and since electric proportional flow control valve is slide valve
Structure, oil resistant pollution capacity is poor, and control precision is not high.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of pressure compensation electricity ratio seat valves, reach electricity with a valve
The function of proportional flow control valve series connection Solenoid seated valve, simplifies structure, reduces cost.
In order to solve the above technical problems, the present invention adopts the following technical scheme: pressure compensation electricity ratio seat valve, electric by ratio
Magnet assemblies and seat valve assemblies composition, the proportion electro-magnet component include flux sleeve and the line set on flux sleeve middle part outside
Circle, the front of the flux sleeve are equipped with ante-chamber, and back cavity, the middle part front side of the flux sleeve are equipped on rear side of the middle part of the flux sleeve
Equipped with the inner hole for being connected to ante-chamber and back cavity, it is equipped with spool push rod in the inner hole, driving spool push rod is equipped in the back cavity
The armature of movement, the seat valve assemblies include main valve housing and the poppet valve core in main valve housing, the front of the flux sleeve and master
Valve pocket connection, the front end of the main valve housing are equipped with oil inlet, and the side of the main valve housing is equipped with oil outlet, before the poppet valve core
Portion is equipped with the conical head cooperated with oil inlet, and the middle part of the poppet valve core, which is equipped with, slides back and forth being slidingly sealed for sealing with main valve housing
Section, the rear portion of the poppet valve core protrudes into ante-chamber and is connected with reset spring, and the rear portion of the poppet valve core is equipped with to be connected to ante-chamber
Radial pressure guide hole, the poppet valve core are provided in the axial direction with the axial pressure guide hole for being connected to poppet valve core front end with radial pressure guide hole.
Preferably, the poppet valve core is equipped with tubular protrusion head, the front end edge of the tubular protrusion head in the front end of conical head
Circumferentially it is evenly equipped with several rectangular thin-wall throttling channels.
Preferably, the diameter of the tubular protrusion head is equal with poppet valve core rearward diameter.
Preferably, the rear portion of the main valve housing is equipped with sealing shroud, and the section that is slidingly sealed of the poppet valve core is equipped with sealing
It encloses and is slidingly sealed cooperation with sealing shroud, the poppet valve core is being slidingly sealed the gear for being equipped on front side of section and cooperating with sealing shroud front end
Step.
Preferably, the inner hole rear portion of the main valve housing is equipped with positioning step, and the rear portion of the sealing shroud is equipped with locating flange,
The front end face of the big locating flange is located on positioning table terrace.
Preferably, the inner hole of the main valve housing is equipped on rear side of oil inlet in the case where poppet valve core closes oil inlet state and taper
The sealed step of head conical surface seal cooperation.
Preferably, the rear end of the poppet valve core is equipped with snap ring, and the reset spring is arranged in snap ring and sealing shroud rear end
Between face.
The technical solution adopted by the present invention combines proportion electro-magnet component and seat valve assemblies, with the change of control electric current
Greatly, poppet valve core control opening becomes smaller flow also with becoming smaller；When electric current is loaded into maximum, poppet valve core is closed, and load is kept, can
Stop keeping load to control the executing agency pole that works at a slow speed fastly, has reached proportional flow control valve series connection Solenoid seated valve with valve
Function simplifies structure, reduces costs.In addition, using pressure compensation structure, inlet pressure oil is transmitted by pressure guide hole
To poppet valve core rear end, so that poppet valve core rear and front end is pressurized and balance, therefore, the flow that poppet valve core is opened is only by ratio electromagnetic force thrust
The influence of size is not influenced by load pressure variation.
To sum up, pressure-compensated electricity ratio seat valve of the invention is that a kind of structure is simple, and standardization is high, compact-sized, pressure
Power is high, and pollution resistance is strong, control precision height, low-cost electric proportional valve.
Detailed description of the invention
Present invention will be further described below with reference to the accompanying drawings and specific embodiments:
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is poppet valve core front-end architecture schematic diagram；
Fig. 3 is the distribution schematic diagram of rectangular thin-wall throttling channel；
Fig. 4 is the hydraulic system principle figure of pressure compensation electricity ratio seat valve application；
Fig. 5 is existing electric proportional flow control valve changes in flow rate schematic diagram；
Fig. 6 is pressure compensation electricity ratio seat valve changes in flow rate schematic diagram of the invention.
Specific embodiment
Pressure compensation electricity ratio seat valve of the invention is that one kind between Normal hydraulic valve and electrohydraulic servo valve is hydraulic
Control valve controls the occasions such as the higher occasion of velocity accuracies, the occasion of load variation and load needs holding used in some.Such as pressure
Force container fatigue life test machine, hydraulic elevator movement and control system, the control of Metal Cutting Machine Tool working table movement, rolling mill
Pressure and control system, hydraulic press, bending machine, plastic injection machine etc..
As depicted in figs. 1 and 2, pressure compensation electricity ratio seat valve forms 1 by proportion electro-magnet component 2 and seat valve assemblies.Its
In, the proportion electro-magnet component 2 include flux sleeve 21 and in the middle part of the flux sleeve outside coil 22, before the flux sleeve
Portion is equipped with ante-chamber, and the middle part rear side of the flux sleeve is equipped with back cavity, and connection ante-chamber is equipped on front side of the middle part of the flux sleeve with after
The inner hole of chamber is equipped with spool push rod 23 in the inner hole, and the armature 24 that driving spool push rod 23 acts is equipped in the back cavity,
Coil 22 is rear on flux sleeve 21 to be locked by locking cap 26；The foot section brought emergency push rod 25 of flux sleeve 21.Seat valve assemblies 1 wrap
Main valve housing 11 and the poppet valve core 12 in main valve housing are included, the front of the flux sleeve is connect with main valve housing 11, main valve housing rear end
It is sealed equipped with threaded engagement in flux sleeve nose threads mouth and by sealing ring, after the energization of coil 22, armature 24 is in magnetic conduction
The inner hole actuation of set 21 pushes poppet valve core 12 by spool push rod 23.
Wherein, the front end of main valve housing 11 is equipped with oil inlet 111, and the side of the main valve housing is equipped with oil outlet 112, the cone
The front of spool 12 is equipped with the conical head 122 cooperated with oil inlet metastomium valve port, and ante-chamber and company are protruded into the rear portion of the poppet valve core
It is connected to reset spring 14.
As shown in Figures 2 and 3, poppet valve core 12 is equipped with tubular protrusion head 121 in the front end of conical head, and the tubular protrudes head
Front end be distributed along the circumference with several rectangular thin-wall throttling channels 1211, and the diameter and poppet valve core rearward diameter of tubular protrusion head
It is equal so that after pressure conduction poppet valve core rear and front end be pressurized balance.Oil liquid first throttles in rectangular thin-wall throttling channel, then
It throttles again at valve port, can accurately adjust the size of flow, make to control the linear variation of flow；The cone of conical head 122
Face sealing surface can end oil liquid flowing in maximum current, realize that load is kept.
As shown in figure 5, existing electricity proportional flow control valve, without pressure compensation structure, flow is influenced by the variation loaded, with
Load become larger, flow becomes smaller.It is balanced to make the rear and front end of poppet valve core 12 be pressurized, using pressure compensation structure, wherein
The rear portion of poppet valve core 12 is equipped with the radial pressure guide hole 102 being connected to ante-chamber, and the poppet valve core is provided in the axial direction with before making poppet valve core
Hold the axial pressure guide hole 101 being connected to radial pressure guide hole.After 111 pressure oil of oil inlet is transmitted to poppet valve core by above-mentioned pressure guide hole
End makes poppet valve core rear and front end be pressurized and balances.Therefore, as shown in fig. 6, the flow of poppet valve core opening is only by proportion electro-magnet thrust
Influence, not by load pressure variation influenced.And due to using pressure-compensated structure, the speed of actuator is not with load
Variation and change, control precision is high.
As shown in figure 4, pump extracts hydraulic oil out, two road binders are separated, flow to the first oil cylinder respectively, the second oil cylinder flows to the
Slave 111 oil inlet of pressure-compensated electricity ratio seat valve oil inlet of one oil cylinder, flows through the rectangular thin-wall throttling channel of poppet valve core front end
1211 is fuel-displaced to oil outlet 112, and the speed of oil cylinder is controlled by the size of 22 electric current of control coil, when control electric current increases
When, valve opening becomes smaller, and also with becoming smaller, oil cylinder slows flow, since 12 front end of poppet valve core throttles using rectangular thin-wall
Slot 1211 makes to control the linear variation of flow；When the load of the first oil cylinder changes, pressure guide hole is oil inlet on poppet valve core
111 pressure conduction makes 12 2 end stress balance of poppet valve core, the openings of sizes of valve is only by the shadow of electromagnetic force to the poppet valve core other end
It rings, ensure that oil cylinder speed is not influenced by load variation；When 22 electric current maximum of coil, 12 close port of poppet valve core is realized
Load is kept.When the second oil cylinder actuation of an other branch, what it is due to the first oil cylinder branch is pressure-compensated electricity ratio seat
Valve, is two-way stop, and the load that the second oil cylinder actuation does not influence the first oil cylinder is kept, and when control, oil inlet allows to have pressure
In the presence of.
In addition, the middle part of the poppet valve core, which is equipped with, is slidingly sealed section with what main valve housing slid back and forth sealing, it is slidingly sealed section
Equal with poppet valve core rearward diameter, the rear portion of the main valve housing 11 is equipped with sealing shroud 13, and the poppet valve core is slidingly sealed section
Be equipped with sealing ring and be slidingly sealed cooperation with sealing shroud, the poppet valve core be slidingly sealed on front side of section equipped with and sealing shroud front end
The gear step of cooperation, main valve housing 11 form the valve pocket being connected to oil inlet 111 and oil outlet 112 on front side of sealing shroud
Chamber.Poppet valve core 12 is cooperated on main valve housing after loading onto sealing ring, then on 13 interference of sealing shroud pressure people's main valve housing.
The inner hole rear portion of the main valve housing is equipped with positioning step 114, and the rear portion of the sealing shroud is equipped with locating flange 131,
The front end face of the locating flange is located on positioning table terrace.The inner hole of the main valve housing is equipped on rear side of oil inlet in cone valve
Core closes the sealed step 113 under oil inlet state with the cooperation of conical head conical surface seal, round wires where sealed step right-angled apices
Form seal line.The rear end of the poppet valve core is equipped with snap ring 15, and the reset spring is arranged in snap ring and sealing shroud rear end face
Between.
Claims (6)
1. pressure compensation electricity ratio seat valve, it is characterised in that: be made of proportion electro-magnet component and seat valve assemblies, the ratio electricity
Magnet assemblies include flux sleeve and the coil set on flux sleeve middle part outside, and the front of the flux sleeve is equipped with ante-chamber, described to lead
It is equipped with back cavity on rear side of the middle part of magnetosheath, the inner hole of connection ante-chamber and back cavity, the inner hole are equipped on front side of the middle part of the flux sleeve
It is inside equipped with spool push rod, the armature of driving spool putter action is equipped in the back cavity, the seat valve assemblies include main valve housing
And the poppet valve core in main valve housing, the front of the flux sleeve are connect with main valve housing, the front end of the main valve housing is equipped with oil inlet
Mouthful, the side of the main valve housing is equipped with oil outlet, and the front of the poppet valve core is equipped with the conical head cooperated with oil inlet, the cone
The middle part of spool is equipped with the section that is slidingly sealed that sealing is slid back and forth with main valve housing, and the rear portion of the poppet valve core is protruded into ante-chamber and connected
There is reset spring, the rear portion of the poppet valve core is equipped with the radial pressure guide hole being connected to ante-chamber, and the poppet valve core is provided in the axial direction with
The axial pressure guide hole for being connected to poppet valve core front end with radial pressure guide hole, the poppet valve core are protruded in the front end of conical head equipped with tubular
The front end of head, the tubular protrusion head is distributed along the circumference with several rectangular thin-wall throttling channels.
2. pressure compensation electricity ratio seat valve according to claim 1, it is characterised in that: the diameter of tubular protrusion head with
Poppet valve core rearward diameter is equal.
3. pressure compensation electricity ratio seat valve according to claim 1, it is characterised in that: the rear portion of the main valve housing is equipped with
Sealing shroud, the poppet valve core are slidingly sealed section equipped with sealing ring and are slidingly sealed cooperation with sealing shroud, and the poppet valve core exists
It is slidingly sealed the gear step for being equipped on front side of section and cooperating with sealing shroud front end.
4. pressure compensation electricity ratio seat valve according to claim 3, it is characterised in that: the inner hole rear portion of the main valve housing is set
There is positioning step, the rear portion of the sealing shroud is equipped with locating flange, and the front end face of the locating flange is located in positioning table terrace
On.
5. pressure compensation electricity ratio seat valve according to claim 3, it is characterised in that: the inner hole of the main valve housing is in oil inlet
The sealed step in the case where poppet valve core closes oil inlet state with the cooperation of conical head conical surface seal is equipped on rear side of mouthful.
6. pressure compensation electricity ratio seat valve according to claim 3, it is characterised in that: the rear end of the poppet valve core is equipped with
Snap ring, the reset spring are arranged between snap ring and sealing shroud rear end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611050910.6A CN106641386B (en) | 2016-11-24 | 2016-11-24 | Pressure compensation electricity ratio seat valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611050910.6A CN106641386B (en) | 2016-11-24 | 2016-11-24 | Pressure compensation electricity ratio seat valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106641386A CN106641386A (en) | 2017-05-10 |
| CN106641386B true CN106641386B (en) | 2019-06-11 |
Family
ID=58811475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611050910.6A Active CN106641386B (en) | 2016-11-24 | 2016-11-24 | Pressure compensation electricity ratio seat valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106641386B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108071621B (en) * | 2017-11-29 | 2019-11-15 | 浙江斯丹特阀门股份有限公司 | Leakage-free pressure compensation electromagnetic proportioning valve |
| CN115388192B (en) * | 2021-09-26 | 2023-12-29 | 广东骏驰科技股份有限公司 | Normally closed type piston cooling control electromagnetic valve |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001082624A (en) * | 1999-07-15 | 2001-03-30 | Nok Corp | Solenoid valve |
| CN103195969A (en) * | 2013-03-26 | 2013-07-10 | 杰锋汽车动力系统股份有限公司 | Proportional control hydraulic valve structure |
| CN204647421U (en) * | 2015-05-21 | 2015-09-16 | 绵阳富临精工机械股份有限公司 | A kind of proportional control electromagnetic valve |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7726630B2 (en) * | 2005-05-20 | 2010-06-01 | Parker-Hannifin Corporation | Solenoid valve |
| CN102878130A (en) * | 2011-07-11 | 2013-01-16 | 上海立新液压有限公司 | Electrically modulated proportional throttle control valve |
| CN202580167U (en) * | 2012-05-13 | 2012-12-05 | 吴旭 | Novel electrically controlled relief valve |
| CN204186666U (en) * | 2014-10-15 | 2015-03-04 | 浙江华益机械有限公司 | A kind of plug-in type load holding valve and hydraulic load retentive control system |
| CN206329791U (en) * | 2016-11-24 | 2017-07-14 | 浙江华益精密机械股份有限公司 | Pressure compensation electricity ratio seat valve |
-
2016
- 2016-11-24 CN CN201611050910.6A patent/CN106641386B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001082624A (en) * | 1999-07-15 | 2001-03-30 | Nok Corp | Solenoid valve |
| CN103195969A (en) * | 2013-03-26 | 2013-07-10 | 杰锋汽车动力系统股份有限公司 | Proportional control hydraulic valve structure |
| CN204647421U (en) * | 2015-05-21 | 2015-09-16 | 绵阳富临精工机械股份有限公司 | A kind of proportional control electromagnetic valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106641386A (en) | 2017-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102113102B1 (en) | Direct acting solenoid actuator | |
| EP2689141B1 (en) | Electro-proportional pilot operated poppet valve with pressure compensation | |
| CN105422921B (en) | A kind of number valve cell and combinations thereof and control method | |
| CN206329791U (en) | Pressure compensation electricity ratio seat valve | |
| US9556968B2 (en) | Electromagnetic actuator and fluid valve with such an actuator | |
| CN106641386B (en) | Pressure compensation electricity ratio seat valve | |
| CN205190903U (en) | Electromagnetism proportinal flow valve | |
| US20150013800A1 (en) | Fluid valve for a vehicle transmission | |
| CN109826995A (en) | A kind of multi-sealed high-speed electromagnetic valve | |
| CN110792650A (en) | Threaded cartridge type load retaining valve | |
| CN103511678A (en) | Direct-acting overflow valve and method for establishing and releasing pressure thereof | |
| CN103663296A (en) | Cylindrical-linear-motor-driven electro-hydraulic proportional directional screw-in multi-way cartridge valve for forklifts | |
| CN108757620B (en) | Double-coil magnetorheological valve with damping gap automatically adjusted along with liquid flow direction | |
| CN108561363A (en) | A kind of side valve type one-way hydraulic balance fastening system | |
| CN202673810U (en) | Direct-acting type three-way proportional throttling valve | |
| CN107559477A (en) | Valve opening and closing mechanism and valve | |
| CN205207307U (en) | Magnetic exchange valve | |
| CN208518995U (en) | A kind of unicoil MR valve that damping clearance is automatically adjusted with liquid flow path direction | |
| CN208474223U (en) | A kind of side valve type one-way hydraulic balance fastening system | |
| CN107725517B (en) | Proportional flow solenoid valve | |
| CN201521701U (en) | Magnetic valve for fluid control | |
| CN103591070A (en) | Thread direct-drive-type electro-hydraulic proportional flow valve of permanent-magnetic alternating-current servo motor | |
| CN108561357B (en) | Plug-in type proportional overflow valve | |
| CN201786792U (en) | Two-position three-way proportional ball valve | |
| CN208381447U (en) | A kind of bi-bit bi-pass normally closed solenoid valve with buffer structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 311835 no.689 Jiefang Road, Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Huayi Precision Machinery Co.,Ltd. Address before: 311835 no.689 Jiefang Road, Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province Patentee before: ZHEJIANG HUAYI PRECISION MACHINERY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Pressure compensation electric proportional seat valve Effective date of registration: 20211108 Granted publication date: 20190611 Pledgee: Diankou sub branch of Zhejiang Zhuji Rural Commercial Bank Co.,Ltd. Pledgor: Zhejiang Huayi Precision Machinery Co.,Ltd. Registration number: Y2021980011835 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230724 Granted publication date: 20190611 Pledgee: Diankou sub branch of Zhejiang Zhuji Rural Commercial Bank Co.,Ltd. Pledgor: Zhejiang Huayi Precision Machinery Co.,Ltd. Registration number: Y2021980011835 |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230907 Address after: 311800 Diankou Town Industrial Zone, Zhuji City, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Sanshang Zhidi Technology Co.,Ltd. Address before: 311835 no.689 Jiefang Road, Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province Patentee before: Zhejiang Huayi Precision Machinery Co.,Ltd. |